Rubber mixture based on butadiene-methylstyrene caoutchouc

FIELD: chemistry.

SUBSTANCE: rubber mixture based on butadiene-methylstyrene caoutchouc includes a vulcanising agent, a mixture of vulcanisation accelerators - dibenzothiazoledisulphide and diphenylguanidine, zinc oxide, an organic vulcanisation activator, a modifying additive - zirconium dioxide and filler with a component ratio, wt. p.: butadiene-methylstyrene caoutchouc - 100.0; sulphur- 2.0; zinc oxide - 5.0; stearic acid - 2.0; dibenzothiazoledisulphide - 1.5; diphenylguanidine - 0.3; technical carbon - 40.0; zirconium dioxide - 25.0-40.0.

EFFECT: invention makes it possible to increase the heat- and fire resistance of vulcanisates with the preservation of high physical-mechanical indices.

2 tbl

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to a modifier, a method of obtaining a modified polymer and the modified polymer of a conjugated diene. The modifier for the polymer of the conjugated diene is obtained as a result of the complete condensation for a silicon-containing compound, which has a protected primary amino group and hydrolysable groups. The method of obtaining the modified polymer based on the conjugated diene includes a stage of modification and stage of the protection withdrawal. The tage of the protection is carried out after the completion of modification, and the used polymer based on the conjugated diene is preferably such that 10% of its polymer chains possess live and pseudolive properties.

EFFECT: modified polymer based on the conjugated diene is characterised by an excellent ability of small heat release and resistance to abrasion, which is used in a caoutchouc composition for the pneumatic tread.

13 cl, 4 tbl, 23 ex

FIELD: chemistry.

SUBSTANCE: bitumen composition includes petroleum road bitumen BND 90/130, SKS-30ARKM-15 or SKS-30ARK rubber and polyethylene polyamine production wastes as an adhesive additive, with the following ratio of components, wt %: BND 90/130 bitumen - 83-93, SKS-30ARKM-15 rubber - 5-10 and polyethylene polyamine production wastes - 2-7 or BND 90/130 bitumen - 86-95, SKS-30ARK rubber - 3-7 and polyethylene polyamine production wastes - 2-7. The method of producing the bitumen composition is carried out by mixing bitumen while heating with a rubber-containing component and an adhesive additive, wherein the rubber is added in the form of 8-12% solution in an organic solvent, wherein the solvent used is hydrocarbons with final boiling point of no higher than 130°C. Preparation of the rubber solution in the solvent is carried out at 40-50°C while mixing for 5-6 hours. The obtained rubber solution and adhesive additive are then added to the bitumen. The mixture is homogenised for 3-4 hours while gradually raising temperature to 160-170°C. Further mixing is carried out until achieving 97% removal of the solvent. The remaining amount of solvent is removed by blowing with nitrogen.

EFFECT: obtaining a homogenous bitumen binder, having improved physical and mechanical properties.

4 cl, 2 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to production of moulded articles containing polybutadiene and can be used in tire production as moulded strips for tire sidewalls or treads. Polybutadiene with content of cis-isomer over 95% and polydispersity lower than 2.5 is mixed with highly dispersed silicic acid and/or carbon black and with cross-linking agents, sulphur or sulphur donors, extra process additive and subjected to extrusion at 40-75°C.

EFFECT: higher quality of processing the mixes and quality of formed articles with lower rolling resistance and abrasion.

5 cl, 1 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to silane-containing caoutchouc mixtures with functionalised diene caoutchoucs and microgels, to method of their obtaining and application in automobile tyres. Caoutchouc mixture, containing caoutchouc, functionalised with hydroxyl, and/or carboxyl groups, and/or their salts, contains caoutchouc from repeating units based on 1,3-butadiene and styrene and silane of the given formula. Caoutchouc mixture can contain styrene-butadiene gel with index of swelling in toluene 1-25 and size particle from 5 to 1000 nm.

EFFECT: invention makes it possible to obtain resistant to wet sliding and possessing low rolling resistance - resistance in the process of steering of automobile tyre-treads with high wear-resistance.

9 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: method of producing conjugated diene rubber includes: (a) a step of reacting a first alkoxysilane compound whose molecule contains a group which can be converted to an onium ion by an onium ion generator, and an alkoxysilyl group which contains two alkoxy groups with a conjugated diene polymer which contains an active terminal atom of an alkali metal or an alkali-earth metal. The polymer is obtained by polymerising a conjugated diene compound and an aromatic vinyl compound to obtain a modified conjugated diene polymer which contains a group which can be converted to an onium ion, and an alkoxysilyl group, and (b) a step of mixing the obtained modified conjugated diene polymer with an onium ion generator and a second alkoxysilane compound whose molecule contains one alkoxysilyl group and one group which can be converted to an onium ion by an onium ion generator. The groups, which can be converted to an onium ion, in the first alkoxysilane and second alkoxysilane compounds are selected from a group of compounds.

EFFECT: reduced hysteresis loss and fuel efficiency in motor tyres.

7 cl, 4 tbl, 25 ex

FIELD: chemistry.

SUBSTANCE: anticorrosive coating composition contains DST-30-01 thermoplastic butadiene-styrene, an oligomer and a solvent, wherein the oligomer used is triethylene glycol dimethacrylate, the solvent used is toluene, and the composition further includes a photoinitiator - 2,2-dimethoxy-1,2-(diphenyl)ethanone.

EFFECT: faster preparation of the coating composition and direct formation of an anticorrosive coating.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: rubber mixture based on butadiene-methyl styrene caoutchouc includes sulphur, diphenylguanidine, sulfene amide C, technical carbon, zinc oxide, stearic acid, as preservative and modifier of 2-(dimethylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol 2-4 wt.p. per 100 wt.p. of caoutchouc.

EFFECT: invention makes it possible to increase confection adhesiveness with preservation of high stability to ageing of rubber mixture vulcanisate.

3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to petrochemical industry, particularly production of butadiene-styrene rubber obtained by emulsion copolymerisation, and methods for filling thereof at a latex step, and can be used in producing industrial rubber articles. The method of producing filled butadiene-styrene rubber involves emulsion copolymerisation of butadiene with styrene in the presence of radical initiators, stoppering the process, degassing, adding an antioxidant and fibre filler - cotton, viscose, capron fibre or a mixture thereof, separating rubber from latex by coagulation in the presence of a coagulation agent and 2% sulphuric acid solution, washing and drying rubber crumbs. The fibre filler is used at the coagulation step in the composition of a compound coagulation agent consisting of 5-30% aluminium chloride solution, added in amount of 2.0-3.0 kg/t rubber, and fibre filler added in amount of 1.0-10.0 kg/t rubber.

EFFECT: method increases process efficiency, intensifies the rubber drying process, reduces consumption of the coagulation agent, stabilises the process of separating rubber from latex and reduces environmental pollution with products of producing rubber by emulsion copolymerisation.

1 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: invention relates to the rubber industry and can be used in making industrial rubber articles. The butadiene-methylstyrene rubber based rubber mixture contains sulphur, diphenyl guanidine, a vulcanisation accelerator, technical carbon, zinc oxide, stearic acid, an anti-ageing agent and a modifier. The vulcanisation accelerator used is sulphenamide Ts, the anti-ageing agent and modifier are 2-(dibutylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol.

EFFECT: high building tack while maintaining high ageing resistance of the butadiene-methylstyrene rubber based rubber mixture.

3 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to rubber industry and can be used in making wear-resistant rubber articles for construction purposes, operating in conditions of intense wear, low temperatures and aggressive media. The oil-and-petrol resistant rubber mixture contains butadiene-nitrile rubber BNKS-40AMN, isoprene rubber SKI-3, methyl styrene rubber SKMS-30 ARKM-15, sulphur, sulphenamide Ts, stearine, technical carbon P324, zinc oxide, regenerate RShT, thiuram D, kaolin, petroleum bitumen, naphtham-2, oil I-8A, N-nitrosodiphenylamine, and process additives - dispractol KS and a mixture of diphenyl carbonate and dimethyl carbonate resin DFK-1.

EFFECT: invention reduces the cost of the rubber mixture owing to use of cheaper process additives, and increases nominal tensile strength and breaking elongation, and reduces the abrasion index.

2 tbl

FIELD: transport.

SUBSTANCE: invention relates to automotive industry particularly, to stud-less tires. Rubber mix comprises isoprene-based rubber, silicon dioxide, bis-(4-methyl benzothiazolyl-2)-disulphide and thiuram-based vulcanization promoter.

EFFECT: higher strength, longer life, higher fatigue strength, accelerated vulcanization.

4 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to production of composition material based on hydrogenated butadiene-nitrile rubber and acrylic rubber and can be used in making heat-resistant rubber plates, rubber-coated shafts and rubber sealing components. The composite material based on hydrogenated butadiene-nitrile rubber and acrylic rubber contains a metal stearate, sulphenamide TS, thiuram, D, a quaternary ammonium base, stearic acid, zinc oxide, a mixture of diaphene FP and acetonanyl R, technical carbon, N,N'-dithiodimorpholine, 2,2-dibenzthiazole disulphide, 1,2-polybutadiene, N-cyclohexyl thiophthalimide and a process additive.

EFFECT: invention improves rheologic properties, widens the range of physical-mechanical and low-temperature properties of the composite material while retaining deformation properties, as well as the possibility of processing by a moulding and non-moulding technique.

3 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: neutral carbon source used is glucose, which is converted to aniline under the action of Escherichia coli or Streptomyces griseus bacteria. The glucose is obtained from plants. The stabiliser, vulcanisation accelerator or modified natural rubber is prepared from aniline obtained as described above.

EFFECT: invention improves environmental friendliness of methods of preparing a stabiliser, vulcanisation accelerator and modified natural rubber, which saves oil resources.

6 cl, 3 dwg, 5 ex

FIELD: process engineering.

SUBSTANCE: invention relates to coupling agent for rubber wasters recycling and may be used in processing of worn-out rubber tires. Coupling agent comptises the following components in wt %: altax - 4.5, carbon-chain rubber - 1.5, zinc stearate - 2.2.

EFFECT: high quality of green rubber mix, higher strength of recycled product.

1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to processing of worn-out tires and to methods of rubber wastes recovery. Proposed method comprises mixing crumb of worn-out tires with digester containing carbon chain rubber and altax to complete digestion of rubber wastes. Zinc stearate in amount of 26 wt % of total amount of digester is added to the latter prior to its mixing with crumb. Sheet is produced from digestion mix to be cut into equal weight and area plates to be laid regularly over the length and width of feeder belt. Said plates are rolled to sheet of thickness smaller than 1 mm. Surface of made sheet is filled with rubber crumb at digester-to-crumb ratio of 5:95. Sheet is passed through rolls several times and folded, at least, in two after every pass in rolls.

EFFECT: simplified process, lower costs.

1 tbl

Rubber mixture // 2476459

FIELD: chemistry.

SUBSTANCE: invention relates to rubber mixtures based on butadiene-acrylonitrile rubber. The rubber mixture contains the following, pts.wt: butadiene-acrylonitrile rubber SKN-26-95 and polyvinyl chloride 5, sulphur 1.9, captax 1.19, thiuram 0.24, stearine 0.95, technical carbon 0.1-5.37. The amount of technical carbon is calculated using the formula c=0.1en, where n= 0,1,2,3,4, e=2.7.

EFFECT: disclosed rubber mixture has high operational characteristics: strength, longevity, modulus of elasticity, loss-angle tangent.

4 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to N-alkyl-N-tert-butylbenzotriazole-2-sulphenamide of formula , where R denotes ethyl, n-propyl or n-butyl. The invention also relates to a rubber accelerator, which is a compound of formula [I], and a method of producing N-alkyl-N-tert-butylbenzotriazole-2-sulphenamide.

EFFECT: positive effect of rubber acceleration and solving environmental problems associated with bioaccumulation when using N-alkyl-N-tert-butylbenzotriazole-2-sulphenamide.

3 cl, 6 tbl, 14 ex

FIELD: chemistry.

SUBSTANCE: the invention relates to polymer friction compositions and can be used in car industry and materials-handling vehicles. The polymer friction composition contains, mass.%: isoprene synthetic rubber SKI-3 - 5,53, polybutadiene rubber SKD - 5,53, industrial oil I-20 - 1,94, wollastonite - 52,9, barium oxide - 23,6, sulphur - 3,5, graphite - 3, technical carbon - 1,7, thiuram - 1,5, zinc oxide - 0,5, captax - 0,3, modifying agent- polymethylene-n-triphenyl boric acid ester - 1-7 to the whole composition mass.

EFFECT: increased thermal resistance, material durability, possibility to control physical and mechanical properties.

1 tbl, 20 ex

FIELD: chemistry.

SUBSTANCE: method involves pretreatment of butadiene or butadiene nitrile rubber on plasticising equipment with further addition of vulcanising agents - sulphur, thiuram, 2-mercaptobenzothiazole, and then powdered filler, fibrous filler saturated with water-soluble epoxy resin, which is a product of the reaction of a mixture of diane and aliphatic resin with glycols or derivatives thereof. The ratio of the fibre to resin ranges from 95-5 to 60-40. A special additive of 1-5% emulsion of a liquid transition metal carbonyl in triethanolamine is then added. The material contains the following in pts.wt: rubber 100, sulphur 1-15, thiuram 0.04-0.2, 2-mercaptobenzothiazole 0.3-4.0, powdered filler 10-100, saturated fibrous filler 15-1000, metal carbonyl emulsion 0.5-10.0.

EFFECT: invention improves strength properties and wear resistance of frictional polymer materials, improves labour conditions when mixing components.

2 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber mixture based on oil-filled butadiene-α-methylstyrene rubber and can be used to make industrial rubber articles for different industries - oil refining, pipeline transport, railway transport, as well as household articles. The rubber mixture is prepared by mixing the following components in pts.wt: oil-filled butadiene-α-methylstyrene rubber - 100, sulphur - 2, dibenzthiazole disulphide -1.5, diphenylguanidine - 0.3, zinc oxide - 5, stearic acid - 2, technical carbon - 50 and 0.05-0.5 sodium alginate. Sodium alginate is pre-mixed with powdered ingredients in a powder mixer.

EFFECT: invention increases fatigue endurance of rubber during multiple stretching and reduces heat build-up at constant strain amplitude.

3 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: rubber mixture based on butadiene-methyl styrene caoutchouc includes sulphur, diphenylguanidine, sulfene amide C, technical carbon, zinc oxide, stearic acid, as preservative and modifier of 2-(dimethylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol 2-4 wt.p. per 100 wt.p. of caoutchouc.

EFFECT: invention makes it possible to increase confection adhesiveness with preservation of high stability to ageing of rubber mixture vulcanisate.

3 tbl, 1 ex

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